Profit on the Mac requires X Windows; either the Apple X11 server or
the XFree server must be installed. After ensuring that X Windows is
running, simply open the ``bin'' directory and double-click on the
profit.command icon. This has the side-effect of running the
``Terminal'' program, and will fail if X Windows is not running. The
Terminal program can be exited after running Profit. This is a
workaround that we hope to avoid in a future release.